Brake mechanism for talking machines



H. W. YouN T.

BRAKE MECHANISM FOR G MACHINES.

APPLlcMloN mm SEPT. 28. |921.

1,437,700. Patented De@.'5,1922.

lnvenror. Henry W. Youngquisr by fwa my@ ATTys.

fi l) idntented Een. 1922.

Nnin

:met

rimini vv. YounGaUisr," on MANCHESTER, naw neiurfsi-iinn.

Fit sa. !k Inman BRAKE Mnoiianisivi non '.iziiraari`tcfi ivieo'niivns.

l Applicatie sied september 2s, i921. seriali` No. 563,774.

Toalla/hom z'zmag/ concern."l f I f y Be it known that I, HENRY WV.YOUNG-` Quisr, a citizen of thelUnited States, and

resident of Manchester., county oit Hills borough, State .of -New`Hampshire, have invented an Improvement in Brake Mechanisin for TalkingMachines, ofwhichjthe following description, in connection with theaccoi'npanying drawing, is aspecilication, like charactersoii thedrawing repre-` senting like parts. n

This invention relates to improvements in starting and stoppingmechanisms forr arm across a predetermined lield at the con-` clusion ofthe reproduction to arrest ythe rotation oi? the record supportingmeans.

rlhe invention further contemplates the provision oi'f' a braking meansoperable by the movement or' the tone arm in the opposite direction fromthat above described, through a predetermined iield outside of the field,of

reproduction of the record, to prevent rota.- tiou oi'f the recordsupporting means.

By reason oi the combination of these bwking mechanisms means areprovided for retaining the record supporting means a ffainstnieans,'carried by the tone arm, is moved toward reproducing` positionwhereuponthe record supporting. means will be released and continue torotate until the reproducing means traverses a predeterminedheld at'theend olfy the reproduction and causesl the otherv l'iiaking means to stopthe machine. y

V{.)reterably the construction `is such' that the beginning of themovement ofthe tone arm in a directionto1 cause the actuation of one oi?the braking `mechanisms will cause the release of the other brakingmechanism.

These and otherfobjects and features of the invention will morefullyappear from the following description and the accomrotation until thereproducing panying drawings and pointedont` inthe claims.

A preferred embodiment ofjmy invention isjuillustratedherein as appliedtopa usualI type oftalkingniachiiie provided with rotatable meansit'orcarrying a disk record, but itwill bev understood thatl the invention isapplicable also to machines having rotatable means for carrying acylindrical record and that the invention may be employedin connectionwith other `mechanisms than talking machines to' which it may beapplicable.

Inthe-drawingsp l Fig; lisa planview of a-su'ficient-"portion oie'atalking machine to illustrate the applica-tion of lmyinvention thereto,portions of the frame, ythe record supporting fdisk and the record beingbroken away to illustrate the governor mechanism and a preterredy meansfor applying the brake' there- E ig. 2 is adetail vertical sectionalview on an enlarged scale,on line 22 Fig. l, illustrating `the governor,and a portion or' the braking mechanism in elevation.

The talking machine illustrated herein is ot ausual type comprising abasel which carries' the usual spring motor, (not shown),

which `serves to. actuate, a driving sharnt 2 having atits upper'endsuitable means engaging a `telt covered record supporting` disk Theusualtype of record d is placed upon rrthe. record supporting disk 3 and thespiral grooves' of tliefrecordare engaged bythe usual needle whichl'foi-ms a part of the sound-reproducing means or sound boi;v

6 which is carried at the endfofa tone arin 7 which is pivotally mounted`in a suitable stand Son said base.

In the construction illustrated the speed .of rotation of the recordsupporting disk 3 is controlled by a governor which is actuatec vfromthe mainshaft 2. xAs shown herein a 'worm `gear 9 which is fiXedlysecured to the driving shaft Qengages a worm l() upon ay governor shaftll which isinounted in suit ablebearings in brackets l2 and 13. L collar14,'ixedly secured tothe goveriioi` shaft il. is connected by leafsprings 15 to a sleeve 16 which is slidably movable axially uplon thegovernorfshaft. Weights 17, which are connected to the respective.springs. l5 intermediate of theirlength, are thrown out by'cen-ftri'fugaliaorce otrotation in suoli a manner as to move the sleeve 16axially on said sliaiit to cause a fienure oi the springs therelOS,

by shortening their effective length and moving the sleeve 16 toward theplane in which the weights rotate. A. rotatable brak .ing member,lpreferably in the form of a disk 1S, is tixedly secured to the sleeve16 so that it moves with said sleeve. rllhe speed ot rotation of thegovernor shaft is controlled by a brake 19 which is positioned to engagethe rotating braking member 18 'when the latter has been moved apredetermined distance and by the braking action upon said disk acts toretard the movement oit' the governor shaft and consequent-ly the mainshatt rto a predetermined speed. Su1t-' y tion ofthe' governor andconsequently to stop the machine. In the preferred embodiment ot theinventionillustrated herein this is accomplished by providing areciprocably mounted brake member 20 having a brake shoe 211. adapted,when 'the reciprocating member 20 is moved longitudinally, to en gagethe rotary brake member 18 of the` governor. The brake member 2Odesirably is slidably mounted in a suitable guide or guides 22 and isprovided with an offset end 23 which is yieldably connected by a helicalspring-24, or other suitable means, to the end Otan actuating lever '25which is pivotally 'mounted upon a stud ,26 carried by the base 1, the.reciprocating member 23 desirably being provided ywith an extended slot2T through which the end ot the lever 25 eX ten-ds.

Tl're opposite arm ot the lever, for convenience in. construction, isprovided with an otl'set which. is pivotal ly connected by a stud 29 toone end ot link 30, the opposite end .ot which is pivotally mounted upona stud 31 in they end oi an arm 32 which member 2O will not be broughtinto engagement with the Vrotating brake member 18 of the governor untilthe needle of the soundreproducing member 6 has passed beyond thereproducing' portion ofthe record; but while the tone arm is traversingthe final convolutions ottherecord the brake shoe 21 will be graduallyapplied to the rotatable disk 18 ont thegovernor. As the speed ofrotation ot the disk 18 is decreased the `governor springs graduallystraighten and thus progressively increases the braking ilforce ot thebrake 21 until the machine is stopped. During this action the spring 2ayields to the movement ample, as by iformingthe link 30 in adjust-` ablesections coupled by a bolt and slot connection and or other suitablewell knownmeans. v

The present invention contemplates the combination with the brakingmechanism for arresting rotation oi the record supporting member ofmeans for preventing the rotation ot' the record supporting member whenthe machine is not in use, operable by the movement ot the tone arm inthe opposite direction to that Jfor applying the brake at the conclusionof the reriroduction of the record` so that the initial n'iovement otthe tone arm when in one braking' position towards the position in whichthe other brake will be applied will instantly release the appliedbrake. The mechanism, therefore, comprises automatic starting andstopping mechanism operable by the movement of the tone arm.

The mechanism for arresting the rotation ot the record supportingmember, when the tone arm is moved from operative position` comprises abrake shoe 37 which is illustrated herein as applied to the rim therecord supporting` disk 3 and is carried at the end ot one arm oi alever which pivotally mounted upon a stud 39 upon the base. The otherarm il) oft the le ver extends beyond. the pivot and is actuatedAthrough a spring` 41. vwhich is engaged by an arm l2 also pivotal rymoiuited upon a stud 3S) und adapted to be engaged by a stud 4:55 uponthe arm 32 which is connected to the tone arm.. rihus when the ltonearmis swung to inoperative position, as illustrated in t`ull lines in Fig.1, the stud 43 moves the arm 4t2 outwardly oompressing the spring 4-1and causing the same to move the lever a0 about its pivot and apply thebrake 3T to the record supporting means. When the tone arm moved in theother direction the stud is removed from engagement with the arm e2thereby vreleasing Athe pressure upon the lever 40. The brake is thenwithdrawn from engagement with the record supporting means by a helicalspring jffl-which connected :it one end to the arm 38 of the lever andat its other end kto a bracket 45 carried by the base 1. A. stud 46 maybe provided to limit themoveinent of the lever arin 38 caused bytheaction of the spring le. i i

' lt will be remembered that the arm is connected to the link 30 andcauses the actuation of the governor braking mechanism when the tone armswung to the dotted line position illustrated in Fig. l at theconclusion ot the reproduction ot the record,

The interposition of the springfil between the arni l2 and the lever armet() which it actuates provides,sutiicient resilience `to preventbending or injury to the brake lever l0 it' the tone arm is svvung bytheoperator too vigorously into inoperative position, and also serves toyieldingly apply the brake so that the rotation of the record supportingmeans will not be arrested so injure its actuating mechanism.

lllhen the machine is at rest the tone arin Will normally beheld in thefull line position illustrated in Fig. l with thebrake 37 applied to therecord supporting means. ln operating the machiner the record is placedupon the record supporting member in .the usual manner. The tone ai'mis`then `swung about its pivot to bring the' sound boX ivhich carries theneedle over the outer convolution of the spiral groove of the record andthe needle placed in saidgroove. nientof the tone arm withdraws the stud43 from its engagement with the lever. The spring i4 thereupon releasesthe brake from engagement- With the rotatable record supporting meansand permits the automatic starting of the machine. As the needle oiE thesound box traverses the spiral groove of the record the tonek arm isswung about its pivot and the governor brake is gradually moved towardbraking position. After the reproduction oi the record is completed thecontinued movement of the tone arnn' eitherI in usual linal convolutionsot the spiral or in the special oonvolutions Se illustrated herein,eventually forces thi-brake shoe 2l into engagement with the rotatablebrake disk ot the governor thereby arresting the machine and retainingthe saine jin arresteifl position. When the record is to be removed andreplaced the sound box is raised in the l usual manner and moved 'towardthe inop" erative position illustrated in full lines in Fig. l. As soonas it is raisedr trom the vterminal, convolutionsjof the record andmoved toward inoperative position the governor brake is released andwhen the tone arm hasbeen completely swung to inoperative position thebrake 37 is applied. This movement ot the tone arm usually is accomplislied With sulicient rapidity to cause the agiplication ot the brake37 before the driving mechanism has started the rotation of?thetrecord,supporting(means5 or atleast be- Vlowing claims.

quickly as to This movefore the record supporting means has acs `quiredanyconsiderable momentum, so that very little force is necessary toarrest its ro ferent tv es ot talli'innr machines lInav be en D i spiritandscope or the :tol-

made Within the it will also be understood that while the "invention isherein described as applied particularly to talking machines it maybe'used in connection with other analogous machines and devices. n,Having thus described my inventioiu what l claim as new, and desire torsecure by Letters Patent, is:

yl. In a talking machine comprising rotatable means for supporting aspirally grooved record, means for actuating the same, a governor havingbraking mechanismr for controlling the speed ot rotation of said recordsupporting meansand a tone arm having sound-reproducing means adapted toengage and be progressively moved by the spiral groove of said record;braking means yieldably connected to said tone arm movable by thetraverse ot said tone arm across a predetermined :lield intoco-operative relation to said governor braking mechanism aiidoperablethereby to arrest the rotation ot' said record supporting means.

2; ln combination with a talking'inachine comprising rotatable means"for supporting va spirally grooved record,v a lgovernor having a rotaryshaft and cent-ii ugally operated instrumentalities actuated thereby, arotatable brake member movable axially oit said shaft by said'centrifugal instrumentalities and a tone arin having sound-reproducingmeans adal'ited to engage and be moved pro gl'GSSVGly by the spiral'rroove nl" the record stop mechanism compri ing brake coin iiectedtoseid tone arm and niovanle i" dually rby the traverse of the tone arnipro-` i'll'iced by the final convo]utioiis ot the groove. oit the recordinto engagement with the rota table brake member ot' said governor i lncombination ivitli'a talking .machine comprising rotatable means lorsupporting a spii'ally grooved record, a governor having a rotary shaftand centritugally operated instrumentalities actuated thereby, a.rotatable` brake member movableaiiially ot' said shaft by saidcentrifugal instrumentalities and a tone aiin having sound-repro'ducingmeans adapted to engage and be moved progressively kby the spiral grooveof the recordg stop mechanism comprising a brake connected to said tonearm and movable gradually by the traverse ot' the tone arm produced bythe-final convolutions ot the groove ot the record into engagement withthe rotatable iis izo

brake member ot said governor in opposition to the direction ot axialmovement ot' said rotatable brake member caused by the diminution oitthe. rotation ot said centri-h1- gally operated instrumentalities.

t. ln combination with a talkingy machine comprising rotatable means iorsupporting a spirally giooved record, a governor having a rotary sha-iftand centritugally oper ated instrumenta-lities actuated thereby7 arotatable brake member movable axially ot' said shatt by said cen'tritul instrumentalities and a tone arm havi m sound-reprod eine' meansadapted to engage and be n'ioved progressively b v' the spiral groove otthe record; stop mechanism eompi"ming` a lfralre connected to said timearm and movi able gradually by the traverse oi? the tono arm produced bythe linal convolutions oi? the. groove of the record into engagementwith the rotatable brake member oit said governor and yieldablemeans,intermediate of the tone arm and the brake which is actuatedthereby.

5, ln combination with a talking machine eomgrisingv rotatable m ans torsupporting a. spirally grooved record, a governor hav` ing a rotaryshaft and centritngally operated instrnmentalites actuated thereby, arotatable brake member n'xovahle axially oi: said shaft by saidcentrifugal instrumentali'ties and tone arm having sound-reproducinelmeans adapted to engage and be moved progressively by the spiral grooveol the record; stop mechanism comlnising a reeiproeably mounted brakemember adapted to (5o-operate with the rotary brake member of saidgovernor and means yieldably connected to said reeiproeable brake memberoperable by the movement ot said tone arm through a predetermined fieldto cause the gradual application oi" said brake to said ro'trtable brakemember. y

G. ln combination with a talking machine comprising rotatable means forsupportinga soir-illy grooved record, a governor having a rotary shaftand eentri'tugally operated instrlmientalities actuated thereby, arota-- table brake member movable axially ot said shaft by saidcentrifugal instrumentalities and a tone arm having; sound-reprodncingmeans adapted to engage and be moved progressively by the spiral `grooveof the record; stop n eehanism Comprisingv a reciprocably mou ted brakemember adapted to (3o-operate with the rotary brake member ot said`table means `t'or anPpm'tinga ally grooved record7 a tone arm havingmundreprodilcingg' meamI adapted to'engage and be moved by the spiral.arm-ive oit the record g starting' and stoil'vjinp; mecl'ianismcomprif-iingi a plurality oit braking means operable hy movements or'the tone arm across an initial and a terminal field in diftlerentdirections to arrest said record supporting n'ieans`y the initialmovement oit the tone arm te refrord-engg'awingj position acting torelease one braking` ni'eeba'- ism and the final movement ot the tonearm in the same direction serv ingV to ctnate the other brakingmechanism.

5%. l'n a talking machine einnprisinrr rotatable means 'torsinnaortin5,;` a` spirally erooved recorih a tone arm havingl sound-reproducing; means adapted to engage and be nie-ved by the spiral grooveet the record; starting and stopping' mechanism comori ing;V a pluralityot lnalrin` means operable by movements oi the tone arm across aninitial and a terminal 'ield in dii'erent directions to said recordsupporting means, the connections to said tone arm being' such that themovement oit tl -i tone arm in av dihave signed my

